Finding the Third Proportional to 10,989,728 and 16,155,300

Step by Step Solution

1. Step 1: Write the proportion equation
   10,989,728 : 16,155,300 = 16,155,300 : x
2. Step 2: Convert to fraction form
   10,989,728/16,155,300 = 16,155,300/x
3. Step 3: Cross multiply
   10,989,728x = 16,155,300 × 16,155,300
4. Step 4: Simplify right side
   10,989,728x = 260,993,718,090,000
5. Step 5: Solve for x
   x = 260,993,718,090,000/10,989,728
6. Step 6: Final answer
   x = 23,748,878.78